This doesn't have a single good answer. Depends on how close or far the deer is and how high or low you are. The angle always changes. You need to think in terms of seeing thru the deer and picking an aiming point that puts your arrow where it needs to be to take out the most goodies, and a low aim spot that might be chosen for a ground shot is not really a good choice for an elevated shot.
If the deer is close, you need to aim much higher, if it is farther away, then a lower aim point is called for.
ChuckC